Radiators for Excavators and Heavy Equipment: OEM-Quality Construction Equipment Radiators, Globally Supplied

Excavator and Heavy Equipment Radiators by Machine Type

Imara Engineering's radiator catalogue covers the full range of machine types used across construction, mining, civil engineering, and earthmoving operations. This page sits within our Radiators and Coolers family. If your machine also requires an engine oil cooler, coolant hoses, or a radiator cap hose, our team can source and confirm those parts together with your radiator order. Browse by machine type below or contact us directly with your serial number for an immediate part match.

Excavator Radiators

Hydraulic excavators operate under continuous thermal load, particularly during heavy dig cycles, demolition work, and operation in high-ambient-temperature environments. Our excavator radiators are engineered for that sustained demand, with reinforced core construction, OEM-matched inlet and outlet geometry, and aluminium or brass-copper build options depending on your machine platform and operating environment.

Compatible excavator platforms include:

• CAT 302.5, 308, 315, 320D, 323, and 330 series
• Komatsu PC130, PC200-8, PC300, and PC400 series
• Hitachi ZX130, ZX200, ZX300, and ZX450 series
• Doosan, Volvo CE, and John Deere — contact our team for availability

Dozer and Bulldozer Radiators

Dozers and bulldozers operate at sustained high engine loads during ripping, pushing, and grading, placing near-constant demand on the cooling system. A dozer radiator failure on a remote site creates significant operational disruption and recovery costs. Imara Engineering stocks dozer radiators and bulldozer radiators for the most widely used dozer platforms in the market.

Compatible dozer platforms include:

• CAT D6, D7, D8, and D9 dozer series including the cat d6 radiator
• Komatsu D65 and D85 dozer platforms, including the Komatsu D65 radiator
• Aluminium-core construction available for high-temperature operating environments
• Full radiator assemblies and radiator core-only replacements are available

Wheel Loader and Loader Radiators

Wheel loaders cycle at high frequency throughout the working day, loading, reversing, and tipping in continuous repetition. This creates intermittent but sustained thermal loading on the engine cooling system that requires a correctly rated radiator at all times. Imara Engineering stocks loader radiators and wheel loader radiators for Caterpillar and Komatsu platforms. If your loader make and model is not listed on this page, contact our team directly as our catalogue extends well beyond what is shown online.

Mini Excavator Radiators

Compact machines work in confined spaces and often operate harder relative to their size than larger machines. A failed mini excavator radiator will shut down a job site as effectively as a failure on a 30-tonne unit. Imara Engineering stocks mini excavator radiators for the most commonly operated compact platforms across the CAT, Komatsu, and Hitachi ranges. Send us your machine model, and we will confirm part availability and fitment immediately.

Radiator Types Available from Imara Engineering

Understanding which radiator type your machine requires avoids costly ordering errors and delays. Imara Engineering supplies the following radiator types across its range:

1. Full radiator assemblies — complete unit including tanks, core, and mounting brackets, ready for direct installation with no fabrication or adaptation required
2. Excavator radiator cores — replacement cores for machines where the tanks are undamaged and reusable, and only the core section has corroded or collapsed
3. Aluminium-core radiators — lightweight, high-conductivity units suited to excavators and dozers operating in high-ambient-temperature environments such as Australian, African, and Middle Eastern job sites
4. Brass-copper radiators — traditional construction suited to older machine platforms and to operating environments with aggressive or untreated coolant chemistry

If you are uncertain which type is correct for your machine and failure mode, our team will advise based on your machine model, operating environment, and the nature of the failure before your order is placed.

Why Excavator Radiators Fail and What to Do About It

Understanding what causes radiator failure protects your investment in the machine and helps you order the correct replacement the first time.

The Most Common Failure Causes

• Physical impact damage from rock strikes, debris, or bucket contact cracks the core or damages the tanks and causes immediate coolant loss
• Internal corrosion from poor water quality, incorrect coolant mix ratios, or overdue coolant change intervals deteriorates the core from the inside over time
• Electrolytic corrosion caused by stray electrical current passing through the coolant, which accelerates internal radiator deterioration and is commonly linked to earthing faults on the machine
• Scale and mineral deposit build-up from hard water restricts coolant flow through the core and reduces heat rejection efficiency well before complete failure occurs
• External fin blockage from fine dust, mud, and organic debris packing into the fin array, preventing airflow across the core and causing overheating with no visible leak present

Preventive Steps That Extend Radiator Service Life

1. Use the correct coolant-to-water ratio at all times, typically 50:50 using deionised or distilled water, never raw tap water in hard water regions
2. Change coolant at the manufacturer's recommended service interval and never extend coolant beyond its rated service life
3. Clean the fin array regularly using compressed air or a low-pressure wash to clear debris before blockage develops
4. Inspect for earthing faults if unexplained internal corrosion is present, as electrolytic damage is frequently misdiagnosed as coolant quality failure
5. Check hose connections and the radiator pressure cap at every service interval, as a failing cap reduces system pressure and allows coolant to boil at lower temperatures than the engine is designed to tolerate

Why Source Your Excavator Radiator from Imara Engineering?

OEM Specification Without the OEM Price

Every heavy equipment radiator we supply at Imara Engineering is manufactured using the same aluminium alloy, copper, and brass specifications as the OEM unit. Core tube thickness, fin spacing, tank material grade, and connection geometry are all matched to the original. OEM specification is a procurement standard at Imara Engineering, not a marketing term. What you receive performs identically to the original, and you pay a fraction of what a dealership would charge for the equivalent part.

Direct Fit Confirmed Before Your Order Is Placed

Every radiator in our catalogue is cross-referenced against machine make, model, and serial number. Before your order is processed, our team verifies fitment against our database. If any discrepancy exists, we resolve it before the part is dispatched. You will not receive a radiator that requires modification to fit your machine, and you will not have to manage return freight for a mismatched part.